Feature summary:
Each suggestion from MachineVision api has a confidence score, e.g. 0.91 (for 91%). The Metadata-to-Concept tool to have a similar number with each suggestion.
We need to add a 2 new columns to the suggestions table. google_vision_confidence and metadata_to_concept_confidence. They can be Null if the suggestion was not from that service.
At present, we only need to save data into the google_vision_confidence column.
NOTE: The confidence score can be found for each suggestion in this.depictSuggestions from file isa\src\participation-manager\base.js. This must be included in the suggestion data that is send to the server after a contribution.